public override string Execute()
{
string sMsg = string.Empty;
SetError(sMsg);
ResetAffectedRows();
SQLNoneQuery sql = base.ExecutionCommand;
ConnectionItem connect = Connection;
DbTransaction transaction = Transaction;
if (sql != null && connect != null)
{
DbCommand cmd = connect.ConnectionObject.CreateCommand();
if (transaction != null)
{
cmd.Transaction = transaction;
}
bool bClosed = !connect.ConnectionObject.Opened;
if (bClosed)
{
connect.ConnectionObject.Open();
}
if (connect.ConnectionObject.Opened)
{
try
{
int i;
EnumParameterStyle pstyle = connect.ParameterStyle;
cmd.CommandText = sql.SQL;
if (sql.CommandType == enmNonQueryType.StoredProcedure)
{
cmd.CommandType = CommandType.StoredProcedure;
}
else
{
cmd.CommandType = CommandType.Text;
}
int nCount = ParameterCount;
for (i = 0; i < nCount; i++)
{
DbParameter pam = cmd.CreateParameter();
if (pstyle == EnumParameterStyle.LeadingQuestionMark)
{
if (sql.Param_Name[i].StartsWith("@", StringComparison.OrdinalIgnoreCase))
{
pam.ParameterName = string.Format(CultureInfo.InvariantCulture, "?{0}", sql.Param_Name[i].Substring(1));
}
else if (sql.Param_Name[i].StartsWith("?", StringComparison.OrdinalIgnoreCase))
{
pam.ParameterName = sql.Param_Name[i];
}
else
{
pam.ParameterName = string.Format(CultureInfo.InvariantCulture, "?{0}", sql.Param_Name[i]);
}
}
else
{
if (sql.Param_Name[i].StartsWith("@", StringComparison.OrdinalIgnoreCase))
{
pam.ParameterName = sql.Param_Name[i];
}
else
{
pam.ParameterName = string.Format(CultureInfo.InvariantCulture, "@{0}", sql.Param_Name[i]);
}
}
pam.DbType = ValueConvertor.OleDbTypeToDbType(sql.Param_OleDbType[i]);
pam.Direction = this.Param_Directions[i];
pam.Size = EPField.FieldDataSize(sql.Param_OleDbType[i], this.Param_DataSize[i]);
pam.Value = ValueConvertor.ConvertByOleDbType(sql.Parameters[i].Value, sql.Param_OleDbType[i]);
cmd.Parameters.Add(pam);
}
cmd.Prepare();
DbDataReader dr = cmd.ExecuteReader();
_dataset = new DataSet("Results");
int n = 1;
while (true)
{
DataTable tbl = new DataTable(string.Format("Table{0}", n));
for (i = 0; i < dr.FieldCount; i++)
{
DataColumn dc = new DataColumn(dr.GetName(i), dr.GetFieldType(i));
tbl.Columns.Add(dc);
}
_dataset.Tables.Add(tbl);
while (dr.Read())
{
object[] vs = new object[dr.FieldCount];
for (int k = 0; k < dr.FieldCount; k++)
{
vs[k] = dr.GetValue(k);
}
tbl.Rows.Add(vs);
}
n++;
if (!dr.NextResult())
{
break;
}
}
dr.Close();
if (bClosed)
{
closeConnections();
}
for (i = 0; i < nCount; i++)
{
ParameterDirection pt = cmd.Parameters[i].Direction;
if (pt != ParameterDirection.Input)
{
sql.Parameters[i].Value = cmd.Parameters[i].Value;
}
}
FireExecuteFinish();
}
catch (Exception er)
{
if (transaction != null)
{
transaction.Rollback();
transaction.Dispose();
ResetTransaction();
throw;
}
else
{
sMsg = ExceptionLimnorDatabase.FormExceptionText(er);
}
}
finally
{
if (bClosed)
{
if (connect.ConnectionObject.State != ConnectionState.Closed)
{
connect.ConnectionObject.Close();
}
}
}
}
else
{
sMsg = "Database connection not set";
}
}
else
{
sMsg = "SQL statement not set";
}
if (!string.IsNullOrEmpty(sMsg))
{
SetError(sMsg);
}
return(sMsg);
}